Baby&#39;s nursing bottle



May 10, 1949. G. ALLEN Erm. A 2,469,489

BABYS NURSING BOTTLE Filed March 4, 1947 AGWA/Vl' ALLE/Y AIVD 3065/? DAI/L l Patented May 10, 1949 UNITED STATES QEI-T BABYS NURSING BOTTLE i;

Grant Allen and Roger Dahl, Fairview, Monk-f Application March 4, 1947, Serial No. 732,161',

1 Claim.

This invention relates toI a babys nursing bottle, and more. particularly to such a bottle provided with follower means for maintaining the bottle constantly Il'led with liquid to preclude the ingress of airthereinto.

A primary object of thisinvention is the provision of an improved nursing bottle having means associated Ytherewith whereby the bottle is substantially filled with fluid constantly during the nursingA of the infant, thus precluding the ingress oi air into the bottle and the consequent sucking of air into the infants stomach, a practice which has hitherto frequently resulted in colic or similar stomach disorders in infants.l

An additional object of the invention is the proision ofv ysuch'a device provided. with means whereby the follower, which is spring-pressed, may be heldin locked position wh-ile the bottle is filled.

Still another object of the invention is the provision of such'a device which 'may bereadily disassembled .for cleaning and sterilizing as. desired.

A further object of the invention is the provision of such a device which is sanitary, durable in construction, reliable in operation, and which may be utilized in any position of adjustment by the infant.

Still other objects reside in the combinations of elements, arrangements of parts, and features of contruction, all as will be more fully pointed out hereinafter and disclosed in the accompanying drawings, where there are shown preferred embodiments of this inventive concept.

In the drawings:

Figure 1 is a side view, partially in elevation and partially in section, certain concealed portions thereof being indicated by dotted lines, of one form of nursing bottle embodying features of the instant invention.

Figure 2 is a side view, partially in elevation and partially in section, showing the follower and the latching mechanism therefor.

Figure 3 is a sectional view taken substantially along the line 3--3 of Figure 1, as viewed in the direction indicated by the arrows.

Figure 4 is a fragmentary side view partially in elevation and partially in section, showingr a modiiied form of construction.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now to the drawings, and more particularly to Figure 1, the bottle of the instant (Cl. 21S-w11)v invention; is comprised' 'off a tubular member; Ill oiI glassv or Vthe llike threaded; `at :its upper -ex removed, if i desired, "as, well as certainy internal mechanisms to- 'be more -fullyfdescribe'd herein` after, for the purposeofwcleaning'andsterilizing the tube I0;

In the embodimentof the invention disclosed in Figurel, Vthe top cap -I-3,which, may becomprised4 ofglass or the: like; is provided vwithinterior threadsadaptedtoengage the threads I I; and has permanently aflixed thereto in any; desired manner a nipple I5 of any desiredV conventional 'congurationn The bottom member I4 is provided with. a central aperture, through which'is adapted totbef extended ga rod member I6: having `threaded, ,extremities- I1-,upon which is positioned a wing nutv I8', `a sealing gasket-l9 being interposed between the nut I8 and` the bottom capI4.

The inner. end ofithe rod Igtwhich extendsa substantial distance into* the tubular member II'I, is reduced and threaded, as indicated at 20, the reduced end 20 at its juncture point with the rod I6 forming a shoulder 5. Mounted upon the reduced end 20 of the rod I6 and bearing against the shoulder 5 is a gasket or disc 2|, the gasket being provided with an aperture through which the reduced end 20 extends. Seated upon the gasket or disc 2| is a hollow `follower member 23 made of resilient material, the follower member 23 is so formed vas to provide a dome-shaped protuberance 24 in its outer end and a cylindrical portion 6 adjacent its inner end which engages the internal wall of the tubular member IIJ, the end of the cylindrical portion 6 being turned inwardly so as to form a flange 22 which seats against the gasket or disc 2I. The reduced end 20 of the rod I6, as shown in Figure 2, extends through the cylindrical portion 6. Mounted upon the portion of the reduced end 20 of the rod I6 extending within the cylindrical portion 6 and spaced from the gasket or disc 2I is a gasket or disc 25, the gasket 25 being provided with an aperture through which the reduced end 20 extends. In threaded engagement with the threaded portion of the reduced end 20 of the rod I6 is a nut 26 which is turned so as to engage the outer face of the gasket 25 to thereby tightly clamp the latter against the flange 22. A compression spring 30 is positioned between the lower portion of the member 26 and the end cap I 4 in such manner that, when the nut I8 is rotated until the end Il of rod I6 is released, the member 23 is released from latching engagement with end cap I4, and biased upwardly by the spring 30, in the absence of iiuid contents in the tube Ill or of the top cap I3, to the uppermost limit thereof,

A modified form of construction is disclosed in Figure 4, wherein the top cap I3 is omitted and a nipple 3|, of thfcon'ventinal type utilized with wide-mouthed nursing bottles, is substituted therefor.

From the foregoing, the operation of the device should now be readily understandable. When it is desired to fill the bottle with milk, the parts are positioned as shown in Figure 1, the rod I6 being engaged by nut I8 to hold .the follower 23 in its downmost position, and the bottle lled with milk, whereupon the top cap I3, or alternatively, the nipple 3|, is placed thereon. Rotationof the Wing nut I8 will now release the rod I6 from its engagement with the nut I8, releasing spring 30, and the device may be given to the infant. As the infant nurses the bottle, and the fluid contents thereof are reduced, the spring 30 continuously biases the follower 23 upwardly, the pressure of the spring being insuflicient to forcel the fluid through the nipple under normal conditions, thus positively precluding the ingress of air into the bottle, and maintaining it substantially iiuid filled at all times. Obviously, with this construction, the baby may nurse whether the bottle is vertical, horizontal, or at an angle, being assured of a full supply of milk in the nipple at all times.

From the foregoing it will now be seen that there is herein provided an improved nursing bottle which accomplishes all the objects of this invention, and others, including many advantages of great practical utility and commercial importance.

As many embodiments may be m-ade of this inventive concept, and as many modifications may be made in the embodiments hereinbefore 4 shown and described, it is to be understood that all matter herein is to be interpreted merely as illustrative and not in a limiting sense.

We claim:

In a babys nursing bottle, comprising a tubular member having a detachable nipple at one end and a detachable cap at the other end having an aperture therein, a follower slidable in the tubular member, a `spring disposed between the cap and the follower and biasing the latter toward the nipple, and a rod extending inwardly to the follower through the aperture in the cap and externally of the latter having a nut to retain the rod slidably associated with the cap, the features including a pair of disks having apertures therein and forming the rear portion of said follower, a shoulder upon the inner end of said rod and a reduced portion with a threaded end projecting beyond the shoulder through the apertures in the disks, a resilient hollow dome member forming the forward portion of Athe follower and having a hollow cylindrical peripheral por` tion engaging the internal wall of said tubular member, a nut screwed upon the inner threaded end of said rod to confine said disks between the nut and the shoulder on the rod, and an inwardly directed flange upon the outer or rear end of the hollow cylindrical peripheral portion clamped between said disks.

GRANT ALLEN. ROGER DAI-1L.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,254,921 Meengs Jan. 29, 1918 1,264,908 Drury May 7, 1918 1,531,869 Miele Mar. 31, 1925 1,919,887 Gleeson July 25, 1933 2,365,947 Ganson Dec. 26, 1944 

